Beam determining method, apparatus and readable storage medium

Abstract

The present disclosure provides a beam determining method, an apparatus, and a readable storage medium, where the method includes: for a target signal or a target channel, determining beam indication information; where the beam indication information is used to indicate a terminal to receive or send the target signal or the target channel in a corresponding time slot using a receiving beam of a reference signal indicated by a target transmission configuration indication state (TCI state); and sending the beam indication information to the terminal. It overcomes a technical problem in the prior art that beam transmissions cannot be effectively realized for a CSI-RS, an SRS and a non-UE dedicated PDCCH.

1 . A beam determining method, applied to a base station and under a unified transmission configuration indication (unified TCI) architecture, comprising:
 for a target signal or a target channel, determining beam indication information;   wherein the beam indication information is configured to indicate a terminal to receive or send the target signal or the target channel in a corresponding time slot using a receiving beam of a reference signal indicated by a target transmission configuration indication state (TCI state);   sending the beam indication information to the terminal.   
     
     
         2 . The method according to  claim 1 , wherein the target signal comprises: an aperiodic channel state information reference signal (Aperiodic CSI-RS), a semi-persistent channel state information reference signal (semi-persistent CSI-RS) or a sounding reference signal (SRS); and the target channel comprises: a non-dedicated physical downlink control channel (PDCCH) or a physical uplink shared channel (PUSCH); wherein for the target signal or the target channel, the determining the beam indication information comprises:
 for the Aperiodic CSI-RS, obtaining the beam indication information through a radio resource control (RRC) configuration; or, obtaining the beam indication information through a predefined manner;   for the semi-persistent CSI-RS, obtaining the beam indication information through a medium access control control element (MAC-CE) indication used for activating the semi-persistent CSI-RS;   for the SRS, obtaining the beam indication information through the RRC configuration; or, determining, through a predefined manner, an association relationship between an SRS resource set and the TCI state in the unified TCI architecture, and obtaining the beam indication information according to the association relationship; wherein the association relationship comprises a first association relationship or a second association relationship;   for the non-dedicated PDCCH, obtaining the beam indication information by configuring each control resource set (CORESET) through RRC;   for the PUSCH, obtaining the beam indication information; wherein the beam indication information is configured to indicate that a sending beam used by the terminal is a receiving beam used by a control resource set in a time slot for scheduling the PUSCH or a receiving beam used by a control resource set in a time slot for transmitting the PUSCH.   
     
     
         3 . The method according to  claim 2 , wherein based on that the SRS is a semi-persistent sounding reference signal (semi-persistent SRS), for the target signal or the target channel, the determining the beam indication information comprises:
 for the semi-persistent SRS, obtaining the beam indication information through the MAC-CE indication used for activating the semi-persistent SRS;   wherein the obtaining the beam indication information through the MAC-CE indication used for activating the semi-persistent SRS comprises:   indicating, through the MAC-CE used for activating the semi-persistent SRS, whether a receiving beam of the semi-persistent SRS uses a receiving beam indicated by the TCI state in the unified TCI architecture;   based on that the receiving beam indicated by the TCI state in the unified TCI architecture is configured, using a receiving beam indicated by one TCI state among N TCI state(s) in the TCI state(s).   
     
     
         4 . The method according to  claim 2 , wherein the obtaining the beam indication information through the radio resource control (RRC) configuration comprises:
 configuring, through the RRC, whether a receiving beam of the Aperiodic CSI-RS uses a receiving beam indicated by the TCI state in the unified TCI architecture;   based on that the receiving beam indicated by the TCI state in the unified TCI architecture is configured, using a receiving beam indicated by one TCI state among N TCI state(s) in the TCI state(s);   wherein the configuring, through the RRC, whether the receiving beam of the Aperiodic CSI-RS uses the receiving beam indicated by the TCI state in the unified TCI architecture comprises:   configuring, in a channel resource, through the RRC, whether the receiving beam of the Aperiodic CSI-RS uses the receiving beam indicated by the TCI state in the unified TCI architecture; or   configuring, through the RRC, at least one Aperiodic CSI-RS resource set to associate with a channel state information reference signal aperiodic trigger state (CSI-AperiodicTriggerState) to obtain association information, wherein the association information is configured to indicate that associated at least one Aperiodic CSI-RS resource set does not use the receiving beam indicated by the TCI state in the unified TCI architecture, or to indicate that one resource set in the at least one Aperiodic CSI-RS resource set uses the receiving beam indicated by one TCI state among N TCI state(s) in the indicated TCI state(s); wherein one trigger state is associated with the at least one Aperiodic CSI-RS resource set.   
     
     
         5 . (canceled) 
     
     
         6 . The method according to  claim 2 , wherein the obtaining the beam indication information through the predefined manner comprises:
 through the predefined manner, determining that the beam indication information is an indication for the terminal to use a receiving beam used by a control resource set in which downlink control information (DCI) used for activating the Aperiodic CSI-RS is located;   wherein the determining that the beam indication information is the indication for the terminal to use the receiving beam used by the control resource set in which the downlink control information (DCI) used for activating the Aperiodic CSI-RS is located comprises:   based on that a number of receiving beams used by the control resource set in which DCI used for activating the Aperiodic CSI-RS is located is greater than 1, determining that the beam indication information is an indication for the terminal to use one receiving beam of a plurality of receiving beams used by the control resource set in which the DCI used for activating the Aperiodic CSI-RS is located;   wherein the receiving beam used by the control resource set in which the DCI used for activating the Aperiodic CSI-RS is located is a receiving beam used by the control resource set in a time slot for activating the Aperiodic CSI-RS or a receiving beam used by the control resource set in a time slot for receiving the Aperiodic CSI-RS.   
     
     
         7 - 8 . (canceled) 
     
     
         9 . The method according to  claim 2 , wherein based on that the SRS is an aperiodic sounding reference signal (Aperiodic SRS), the beam indication information is configured to indicate that the sending beam used by the terminal is a receiving beam used by a control resource set in a time slot for activating the Aperiodic SRS or a receiving beam used by a control resource set in a time slot for sending the Aperiodic SRS. 
     
     
         10 . The method according to  claim 2 , wherein the obtaining the beam indication information through the medium access control control element (MAC-CE) indication used for activating the semi-persistent CSI-RS comprises:
 indicating, through the MAC-CE used for activating the semi-persistent CSI-RS, whether a receiving beam of the semi-persistent CSI-RS uses a receiving beam indicated by the TCI state in the unified TCI architecture;   based on that the receiving beam indicated by the TCI state in the unified TCI architecture is configured, using a receiving beam indicated by one TCI state among N TCI state(s) in the TCI state(s).   
     
     
         11 . (canceled) 
     
     
         12 . The method according to  claim 2 , wherein the obtaining the beam indication information by configuring each control resource set (CORESET) through the RRC comprises:
 based on that the CORESET is a first type of CORESET, determining to use a receiving beam indicated by the TCI state in the unified TCI architecture and indicating, through a media access control control element (MAC-CE) or a TCI state domain in a first downlink control information format, that one TCI state among N TCI state(s) is configured for a beam transmission, wherein the first type of CORESET is a corresponding CORESET for a dedicated PDCCH;   based on that the CORESET is a second type of CORESET, configuring, through high-level signaling, whether to use a receiving beam indicated by the TCI state in the unified TCI architecture; based on that the configured second type of CORESET uses the receive beam indicated by the TCI state in the unified TCI architecture, using one TCI state among N TCI state(s) in a TCI state indication in the unified TCI architecture for a beam transmission, or, indicating, through a media access control control element or a TCI state domain in a first downlink control information format, that one TCI state among N TCI state(s) is configured for a beam transmission; based on that the configured second type of CORESET does not use the receiving beam indicated by the TCI state in the unified TCI architecture, configuring, through a predefined manner, a TCI state for a beam transmission; wherein the second type of CORESET is a CORESET using/not using the TCI state indication in unified TCI architecture;   for a multi-transmission receiving point (mTRP) of a PDCCH, configuring any search space in two associated search spaces to use the TCI state indication in the unified TCI architecture for a beam transmission or not to use the TCI state indication in the unified TCI architecture for a beam transmission.   
     
     
         13 . The method according to  claim 2 , wherein the obtaining the beam indication information through the RRC configuration comprises:
 configuring, through the RRC, whether a receiving beam of the SRS uses a receiving beam indicated by the TCI state in the unified TCI architecture in a SRS resource or the SRS resource set;   based on that the receiving beam indicated by the TCI state in the unified TCI architecture is configured, configuring, through the RRC, or updating, through MAC-CE, each SRS resource set to use one TCI state among indicated N TCI state(s) for a beam transmission; wherein all SRS resources in a same SRS resource set use a same TCI state;   based on that the receiving beam indicated by the TCI state in the unified TCI architecture is not used, configuring, through each SRS resource in RRC, a TCI state; wherein a power control parameter used by the SRS in a same SRS resource set uses a power control parameter associated with a TCI state of the SRS with the lowest index in the SRS resource set;   wherein the determining, through the predefined manner, the association relationship between the SRS resource set and the TCI state in the unified TCI architecture comprises:   based on an ID of the TCI state in the unified TCI architecture or configuring a configuration order of the SRS resource set, determining a first association relationship between the SRS resource set and the TCI state in the unified TCI architecture, wherein the first association relationship is, for the SRS resource set, an association relationship for using a receiving beam used by the TCI state in the unified TCI architecture; wherein a usage of the SRS is configured as a codebook/non-codebook SRS resource set; or.   determining, through a predefined manner, a second association relationship between the SRS resource set and the TCI state in the unified TCI architecture, wherein the second association relationship is, for the SRS resource set, an association relationship for using a receiving beam used by a control resource set in which DCI used for activating the SRS resource set is located.   
     
     
         14 . (canceled) 
     
     
         15 . A beam determining method, applied to a terminal, comprising:
 receiving beam indication information sent by a base station; wherein the beam indication information is configured to indicate the terminal to receive or send a target signal or a target channel in a corresponding time slot using a receiving beam of a reference signal indicated by a target transmission configuration indication state (TCI state);   based on the beam indication information, determining whether to use a receiving beam indicated by a TCI state in a unified TCI architecture.   
     
     
         16 . The method according to  claim 15 , wherein the target signal comprises: an aperiodic channel state information reference signal (Aperiodic CSI-RS), a semi-persistent channel state information reference signal (semi-persistent CSI-RS) or a sounding reference signal (SRS); and the target channel comprises: a non-dedicated physical downlink control channel (PDCCH) or a physical uplink shared channel (PUSCH); before receiving the beam indication information sent by the base station, the method further comprises:
 receiving beams sent by the base station through scanning;   measuring the beams to obtain beam measurement results;   comparing the beam measurement results to determine a beam with best beam quality, and using beam index information of the beam with best beam quality as beam information;   wherein the beam indication information is determined by the base station based on the beam information.   
     
     
         17 . A beam determining apparatus, applied in a base station and under a unified transmission configuration indication (unified TCI) architecture, comprising:
 a memory, a transceiver, a processor;   the memory is configured to store a computer program;   the transceiver is configured to receive and send data under control of a processor;   the processor is configured to read the computer program in the memory to:   for a target signal or a target channel, determine beam indication information; wherein the beam indication information is configured to indicate a terminal to receive or send the target signal or the target channel in a corresponding time slot using a receiving beam of a reference signal indicated by a target transmission configuration indication state (TCI state);   send the beam indication information to the terminal.   
     
     
         18 . A beam determining apparatus, wherein the apparatus is applied in a terminal, and the apparatus comprises: a memory, a transceiver, a processor;
 the memory is configured to store a computer program;   the transceiver is configured to receive and send data under control of a processor;   the processor is configured to read the computer program in the memory and execute the method according to  claim 15 .   
     
     
         19 - 35 . (canceled) 
     
     
         36 . The apparatus according to  claim 17 , wherein the target signal comprises: an aperiodic channel state information reference signal (Aperiodic CSI-RS), a semi-persistent channel state information reference signal (semi-persistent CSI-RS) or a sounding reference signal (SRS); and the target channel comprises: a non-dedicated physical downlink control channel (PDCCH) or a physical uplink shared channel (PUSCH); wherein the processor is further configured to:
 for the Aperiodic CSI-RS, obtain the beam indication information through a radio resource control (RRC) configuration; or, obtain the beam indication information through a predefined manner;   for the semi-persistent CSI-RS, obtain the beam indication information through a medium access control control element (MAC-CE) indication used for activating the semi-persistent CSI-RS;   for the SRS, obtain the beam indication information through a RRC configuration; or, determine, through a predefined manner, an association relationship between an SRS resource set and the TCI state in the unified TCI architecture, and obtain the beam indication information according to the association relationship; wherein the association relationship comprises a first association relationship or a second association relationship;   for the non-dedicated PDCCH, obtain the beam indication information by configuring each control resource set (CORESET) through RRC;   wherein for the PUSCH, the beam indication information is obtained; wherein the beam indication information is configured to indicate that a sending beam used by the terminal is a receiving beam used by a control resource set in a time slot for scheduling the PUSCH or a receiving beam used by a control resource set in a time slot for transmitting the PUSCH.   
     
     
         37 . The apparatus according to  claim 36 , wherein the processor is further configured to, based on that the SRS is a semi-persistent sounding reference signal (semi-persistent SRS), for the semi-persistent SRS, obtain the beam indication information through the MAC-CE indication used for activating the semi-persistent SRS;
 wherein when obtaining the beam indication information through the MAC-CE indication used for activating the semi-persistent SRS, the processor is specifically configured to:   indicate, through the MAC-CE used for activating the semi-persistent SRS, whether a receiving beam of the semi-persistent SRS uses a receiving beam indicated by the TCI state in the unified TCI architecture;   based on that the receiving beam indicated by the TCI state in the unified TCI architecture is configured, use a receiving beam indicated by one TCI state among N TCI state(s) in the TCI state(s).   
     
     
         38 . The apparatus according to  claim 36 , wherein the processor is further configured to:
 configure, through the RRC, whether a receiving beam of the Aperiodic CSI-RS uses a receiving beam indicated by the TCI state in the unified TCI architecture;   based on that the receiving beam indicated by the TCI state in the unified TCI architecture is configured, use a receiving beam indicated by one TCI state among N TCI state(s) in the TCI state(s);   wherein when configuring, through the RRC, whether the receiving beam of the Aperiodic CSI-RS uses the receiving beam indicated by the TCI state in the unified TCI architecture, the processor is specifically configured to:   configure, in a channel resource, through the RRC, whether the receiving beam of the Aperiodic CSI-RS uses the receiving beam indicated by the TCI state in the unified TCI architecture; or   configure, through the RRC, at least one Aperiodic CSI-RS resource set to associate with a channel state information reference signal aperiodic trigger state (CSI-AperiodicTriggerState) to obtain association information, wherein the association information is configured to indicate that the associated at least one Aperiodic CSI-RS resource set does not use the receiving beam indicated by the TCI state in the unified TCI architecture, or to indicate that one resource set in the at least one Aperiodic CSI-RS resource set uses the receiving beam indicated by one TCI state among N TCI state(s) in the indicated TCI state(s); wherein one trigger state is associated with the at least one Aperiodic CSI-RS resource set.   
     
     
         39 . The apparatus according to  claim 36 , wherein when obtaining the beam indication information through the predefined manner, the processor is specifically configured to:
 through the predefined manner, determine that the beam indication information is an indication for the terminal to use a receiving beam used by a control resource set in which downlink control information (DCI) used for activating the Aperiodic CSI-RS is located;   wherein when determining that the beam indication information is the indication for the terminal to use the receiving beam used by the control resource set in which the downlink control information (DCI) used for activating the Aperiodic CSI-RS is located, the processor is specifically configured to:   based on that a number of receiving beams used by the control resource set in which DCI used for activating the Aperiodic CSI-RS is located is greater than 1, determine that the beam indication information is an indication for the terminal to use one receiving beam of a plurality of receiving beams used by the control resource set in which the DCI used for activating the Aperiodic CSI-RS is located;   wherein the receiving beam used by the control resource set in which the DCI used for activating the Aperiodic CSI-RS is located is a receiving beam used by the control resource set in a time slot for activating the Aperiodic CSI-RS or a receiving beam used by the control resource set in a time slot for receiving the Aperiodic CSI-RS.   
     
     
         40 . The apparatus according to  claim 36 , wherein based on that the SRS is an aperiodic sounding reference signal (Aperiodic SRS), the beam indication information is configured to indicate that the sending beam used by the terminal is a receiving beam used by a control resource set in a time slot for activating the Aperiodic SRS or a receiving beam used by a control resource set in a time slot for sending the Aperiodic SRS. 
     
     
         41 . The apparatus according to  claim 36 , wherein when obtaining the beam indication information through the medium access control control element (MAC-CE) indication used for activating the semi-persistent CSI-RS, the processor is specifically configured to:
 indicate, through the MAC-CE used for activating the semi-persistent CSI-RS, whether a receiving beam of the semi-persistent CSI-RS uses a receiving beam indicated by the TCI state in the unified TCI architecture;   based on that the receiving beam indicated by the TCI state in the unified TCI architecture is configured, use a receiving beam indicated by one TCI state among N TCI state(s) in the TCI state(s);   wherein when obtaining the beam indication information by configuring each control resource set (CORESET) through the RRC, the processor is specifically configured to:   based on that the CORESET is a first type of CORESET, determine to use a receiving beam indicated by the TCI state in the unified TCI architecture and indicate, through a media access control control element (MAC-CE) or a TCI state domain in a first downlink control information format, that one TCI state among N TCI state(s) is configured for a beam transmission, wherein the first type of CORESET is a corresponding CORESET for a dedicated PDCCH;   based on that the CORESET is a second type of CORESET, configure, through high-level signaling, whether to use a receiving beam indicated by the TCI state in the unified TCI architecture; based on that the configured second type of CORESET uses the receive beam indicated by the TCI state in the unified TCI architecture, use one TCI state among N TCI state(s) in a TCI state indication in the unified TCI architecture for a beam transmission, or, indicate, through a media access control control element or a TCI state domain in a first downlink control information format, that one TCI state among N TCI state(s) is configured for a beam transmission;   based on that the configured second type of CORESET does not use the receiving beam indicated by the TCI state in the unified TCI architecture, configure, through a predefined manner, a TCI state for a beam transmission; wherein the second type of CORESET is a CORESET using/not using the TCI state indication in unified TCI architecture;   for a multi-transmission receiving point (mTRP) of a PDCCH, configure any search space in two associated search spaces to use the TCI state indication in the unified TCI architecture for a beam transmission or not to use the TCI state indication in the unified TCI architecture for a beam transmission.   
     
     
         42 . The apparatus according to  claim 36 , wherein when obtaining the beam indication information through the RRC configuration the processor is specifically configured to:
 configure, through the RRC, whether a receiving beam of the SRS uses a receiving beam indicated by the TCI state in the unified TCI architecture in a SRS resource or the SRS resource set;   based on that the receiving beam indicated by the TCI state in the unified TCI architecture is configured, configure, through the RRC, or update, through MAC-CE, each SRS resource set to use one TCI state among indicated N TCI state(s) for a beam transmission; wherein all SRS resources in a same SRS resource set use a same TCI state;   based on that the receiving beam indicated by the TCI state in the unified TCI architecture is not used, configure, through each SRS resource in RRC, a TCI state thereof; wherein a power control parameter used by the SRS in a same SRS resource set uses a power control parameter associated with a TCI state of the SRS with the lowest index in the SRS resource set;   wherein when determining, through the predefined manner, the association relationship between the SRS resource set and the TCI state in the unified TCI architecture, the processor is specifically configured to:   based on an ID of the TCI state in the unified TCI architecture or configuring a configuration order of the SRS resource set, determine a first association relationship between the SRS resource set and the TCI state in the unified TCI architecture, wherein the first association relationship is, for the SRS resource set, an association relationship for using a receiving beam used by the TCI state in the unified TCI architecture; wherein a usage of the SRS is configured as a codebook/non-codebook SRS resource set; or,   determine, through a predefined manner, a second association relationship between the SRS resource set and the TCI state in the unified TCI architecture, wherein the second association relationship is, for the SRS resource set, an association relationship for using a receiving beam used by a control resource set in which DCI used for activating the SRS resource set is located.